/**  
 * 将加密后的字符串进行解密
 */
var arg = process.argv[2];
var buf1 = Buffer.from(arg, "base64");
//字符编码
var str = buf1.toString("utf-8");
console.log(str);
var arr = str.split(" ");
console.log(arr);
var userInfor = {
    "userName": arr[1],
    "pwd": arr[3]
}
console.log(userInfor);